3222fcdb60ac187e0f302064e159211e6ed17d8b98d8a9afd2dccd59e6fc6864

Analysis

max time kernel
9s
max time network
42s
platform
windows7_x64
resource
win7v20210410
submitted
13-06-2021 09:31

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General

Target

updatewin1.exe
Size

272KB
MD5

5b4bd24d6240f467bfbc74803c9f15b0
SHA1

c17f98c182d299845c54069872e8137645768a1a
SHA256

14c7bec7369d4175c6d92554b033862b3847ff98a04dfebdf9f5bb30180ed13e
SHA512

a896acc38a6ff9641b0803f0598369c0d4fa8e38da28c1653c57948fe5e3274880d1b2e7959cd1b1da43375a1318b3ba72e13240bf40b27c852ee72bbb16cadc

Score

10^/10

evasion

Malware Config

Signatures

Deletes Windows Defender Definitions 2 TTPs 1 IoCs
Uses mpcmdrun utility to delete all AV definitions.
evasion

Impair Defenses
T1562

Command-Line Interface
T1059

Processes:

mpcmdrun.exe

pid process

1816 mpcmdrun.exe
Disables Task Manager via registry modification
evasion
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1424 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

pid process

1308 powershell.exe
1308 powershell.exe
1308 powershell.exe
1500 powershell.exe
1500 powershell.exe
1724 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1308 powershell.exe
Token: SeDebugPrivilege 1500 powershell.exe
Token: SeDebugPrivilege 1724 powershell.exe

pid	process
1816	mpcmdrun.exe

pid	process
1424	cmd.exe

pid	process
1308	powershell.exe
1308	powershell.exe
1308	powershell.exe
1500	powershell.exe
1500	powershell.exe
1724	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1308	powershell.exe
Token: SeDebugPrivilege	1500	powershell.exe
Token: SeDebugPrivilege	1724	powershell.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

updatewin1.exeupdatewin1.exepowershell.exe

description	pid	process	target process
PID 1672 wrote to memory of 1356	1672	updatewin1.exe	updatewin1.exe
PID 1672 wrote to memory of 1356	1672	updatewin1.exe	updatewin1.exe
PID 1672 wrote to memory of 1356	1672	updatewin1.exe	updatewin1.exe
PID 1672 wrote to memory of 1356	1672	updatewin1.exe	updatewin1.exe
PID 1672 wrote to memory of 1356	1672	updatewin1.exe	updatewin1.exe
PID 1672 wrote to memory of 1356	1672	updatewin1.exe	updatewin1.exe
PID 1672 wrote to memory of 1356	1672	updatewin1.exe	updatewin1.exe
PID 1356 wrote to memory of 1308	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1308	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1308	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1308	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1308	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1308	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1308	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1500	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1500	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1500	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1500	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1500	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1500	1356	updatewin1.exe	powershell.exe
PID 1356 wrote to memory of 1500	1356	updatewin1.exe	powershell.exe
PID 1500 wrote to memory of 1724	1500	powershell.exe	powershell.exe
PID 1500 wrote to memory of 1724	1500	powershell.exe	powershell.exe
PID 1500 wrote to memory of 1724	1500	powershell.exe	powershell.exe
PID 1500 wrote to memory of 1724	1500	powershell.exe	powershell.exe
PID 1500 wrote to memory of 1724	1500	powershell.exe	powershell.exe
PID 1500 wrote to memory of 1724	1500	powershell.exe	powershell.exe
PID 1500 wrote to memory of 1724	1500	powershell.exe	powershell.exe
PID 1356 wrote to memory of 1816	1356	updatewin1.exe	mpcmdrun.exe
PID 1356 wrote to memory of 1816	1356	updatewin1.exe	mpcmdrun.exe
PID 1356 wrote to memory of 1816	1356	updatewin1.exe	mpcmdrun.exe
PID 1356 wrote to memory of 1816	1356	updatewin1.exe	mpcmdrun.exe
PID 1356 wrote to memory of 1424	1356	updatewin1.exe	cmd.exe
PID 1356 wrote to memory of 1424	1356	updatewin1.exe	cmd.exe
PID 1356 wrote to memory of 1424	1356	updatewin1.exe	cmd.exe
PID 1356 wrote to memory of 1424	1356	updatewin1.exe	cmd.exe
PID 1356 wrote to memory of 1424	1356	updatewin1.exe	cmd.exe
PID 1356 wrote to memory of 1424	1356	updatewin1.exe	cmd.exe
PID 1356 wrote to memory of 1424	1356	updatewin1.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
"C:\Users\Admin\AppData\Local\Temp\updatewin1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1672

C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
"C:\Users\Admin\AppData\Local\Temp\updatewin1.exe" --Admin
2⤵
- Suspicious use of WriteProcessMemory
PID:1356

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1308

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""C:\Users\Admin\AppData\Local\script.ps1""' -Verb RunAs}"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1500

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\script.ps1
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1724

C:\Program Files\Windows Defender\mpcmdrun.exe
"C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all
3⤵
- Deletes Windows Defender Definitions
PID:1816

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""
3⤵
- Deletes itself
PID:1424

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Privilege Escalation

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1602f747-c1a3-4345-8dec-4dcb8b1f72e5
MD5
02ff38ac870de39782aeee04d7b48231

SHA1
0390d39fa216c9b0ecdb38238304e518fb2b5095

SHA256
fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

SHA512
24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_2d686436-375c-4ee1-bd4a-9e44ccd248ba
MD5
75a8da7754349b38d64c87c938545b1b

SHA1
5c28c257d51f1c1587e29164cc03ea880c21b417

SHA256
bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

SHA512
798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_4375eeb7-a65d-43f1-a616-02c5ad6c5370
MD5
be4d72095faf84233ac17b94744f7084

SHA1
cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

SHA256
b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

SHA512
43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_6fe5bd95-2cea-4aea-9c8c-dd67bac4295b
MD5
df44874327d79bd75e4264cb8dc01811

SHA1
1396b06debed65ea93c24998d244edebd3c0209d

SHA256
55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

SHA512
95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_fa12b0a1-3d6a-4bab-a74a-253a75ca0598
MD5
5e3c7184a75d42dda1a83606a45001d8

SHA1
94ca15637721d88f30eb4b6220b805c5be0360ed

SHA256
8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

SHA512
fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_fd9bf4da-ec38-4847-85c5-d50f35796d4c
MD5
a725bb9fafcf91f3c6b7861a2bde6db2

SHA1
8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

SHA256
51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

SHA512
1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_fe80cd26-0cf7-4e38-9884-6dab53b04ca9
MD5
b6d38f250ccc9003dd70efd3b778117f

SHA1
d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

SHA256
4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

SHA512
67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
MD5
1c43358dd0f5eef13f5920f97f616756

SHA1
38d16809d486a27ee94959bc79cc4d1342589fe7

SHA256
c6ff6745105053951de91229e0b945d186dd6ff21c594701a397447a91b071af

SHA512
68a2cfe11a64447ca147b7708c8ff823d66816ad7182638e9515e98c2d3ce1698ce9ed4d80a30656f6916c659ba7ed54b0359e591bdd10bf94c7cc502f793da2

Download Submit
C:\Users\Admin\AppData\Local\Temp\delself.bat
MD5
9e5ded39abd73456458318c691bbd679

SHA1
0b111626c3687fbd3f647b01fa27d26c88c4583d

SHA256
2c4cad4d2fa2df8c8a61085b6ecc91215486fbb5d8e643eec889fc5709a5813f

SHA512
564c2319b34847b605c1a73db2427ad29d52579cc22cece04c327040b7a9a77591cc6e2dfffa825e70a4534451e70b80e04c01a0b9a3b12c0b96c594bb9c07e4

Download Submit
C:\Users\Admin\AppData\Local\script.ps1
MD5
f972c62f986b5ed49ad7713d93bf6c9f

SHA1
4e157002bdb97e9526ab97bfafbf7c67e1d1efbf

SHA256
b47f85974a7ec2fd5aa82d52f08eb0f6cea7e596a98dd29e8b85b5c37beca0a8

SHA512
2c9e2e1b8b6cb5ffe3edf5dfbc2c3b917cd15ba6a5e5264207a43b02ce7020f44f5088aca195f7b428699f0d6bd693ce557a0227d67bbb4795e350a97314e9c4

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
MD5
2ee22e5da096cc0da9e51d530f8eb023

SHA1
60b0ee870cda7c3d8fc3a8cac42415d48de0c10f

SHA256
c2fec38cf41bf7daa1dd5a7ac56d5ea40a30f2d9145c3a1cf717ad35ff8eaa96

SHA512
1d63a75feec31c115f27ec18a423685dfc59c2e01f28b35912602e03364b9a5bf1101b538b6fab0a5c3035ea7d56bb82e3f59d1b61e87365fc1aaeb3680209d1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
MD5
2ee22e5da096cc0da9e51d530f8eb023

SHA1
60b0ee870cda7c3d8fc3a8cac42415d48de0c10f

SHA256
c2fec38cf41bf7daa1dd5a7ac56d5ea40a30f2d9145c3a1cf717ad35ff8eaa96

SHA512
1d63a75feec31c115f27ec18a423685dfc59c2e01f28b35912602e03364b9a5bf1101b538b6fab0a5c3035ea7d56bb82e3f59d1b61e87365fc1aaeb3680209d1

Download Submit
memory/1308-79-0x00000000057D0000-0x00000000057D1000-memory.dmp

Filesize
4KB

Download
memory/1308-93-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1308-87-0x00000000062D0000-0x00000000062D1000-memory.dmp

Filesize
4KB

Download
memory/1308-70-0x0000000004972000-0x0000000004973000-memory.dmp

Filesize
4KB

Download
memory/1308-62-0x0000000000000000-mapping.dmp

Download
memory/1308-69-0x0000000004970000-0x0000000004971000-memory.dmp

Filesize
4KB

Download
memory/1308-71-0x0000000005360000-0x0000000005361000-memory.dmp

Filesize
4KB

Download
memory/1308-68-0x00000000026E0000-0x00000000026E1000-memory.dmp

Filesize
4KB

Download
memory/1308-66-0x0000000001F20000-0x0000000001F21000-memory.dmp

Filesize
4KB

Download
memory/1308-80-0x0000000006340000-0x0000000006341000-memory.dmp

Filesize
4KB

Download
memory/1308-67-0x00000000049B0000-0x00000000049B1000-memory.dmp

Filesize
4KB

Download
memory/1308-74-0x0000000005770000-0x0000000005771000-memory.dmp

Filesize
4KB

Download
memory/1356-65-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1356-60-0x0000000000000000-mapping.dmp

Download
memory/1424-112-0x0000000000000000-mapping.dmp

Download
memory/1500-94-0x00000000020C0000-0x0000000002D0A000-memory.dmp

Filesize
12.3MB

Download
memory/1500-95-0x0000000002730000-0x0000000002731000-memory.dmp

Filesize
4KB

Download
memory/1500-105-0x0000000005850000-0x0000000005851000-memory.dmp

Filesize
4KB

Download
memory/1500-97-0x0000000005420000-0x0000000005421000-memory.dmp

Filesize
4KB

Download
memory/1500-92-0x00000000048A0000-0x00000000048A1000-memory.dmp

Filesize
4KB

Download
memory/1500-88-0x0000000000000000-mapping.dmp

Download
memory/1500-91-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/1672-64-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1672-59-0x0000000075721000-0x0000000075723000-memory.dmp

Filesize
8KB

Download
memory/1724-121-0x0000000005820000-0x0000000005821000-memory.dmp

Filesize
4KB

Download
memory/1724-114-0x00000000049F0000-0x00000000049F1000-memory.dmp

Filesize
4KB

Download
memory/1724-116-0x0000000005420000-0x0000000005421000-memory.dmp

Filesize
4KB

Download
memory/1724-117-0x0000000004A90000-0x0000000004A91000-memory.dmp

Filesize
4KB

Download
memory/1724-118-0x0000000004A92000-0x0000000004A93000-memory.dmp

Filesize
4KB

Download
memory/1724-110-0x0000000001FE0000-0x0000000001FE1000-memory.dmp

Filesize
4KB

Download
memory/1724-106-0x0000000000000000-mapping.dmp

Download
memory/1724-124-0x0000000005910000-0x0000000005911000-memory.dmp

Filesize
4KB

Download
memory/1724-126-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1724-137-0x00000000064A0000-0x00000000064A1000-memory.dmp

Filesize
4KB

Download
memory/1724-138-0x00000000064B0000-0x00000000064B1000-memory.dmp

Filesize
4KB

Download
memory/1816-108-0x0000000000000000-mapping.dmp

Download